In iron and steel plants, iron ore, coking coal, and coke are essential and important raw materials. The 24-hour cycle is adopted. The flow of iron ore, coking coal, and coke is large, and the feeding time is long, which is easy to cause output equipment. In particular, the chute is severely worn, and it is often forced to stop for emergency repairs during the production period, and some chutes are installed in mid-air at a height of more than ten meters or tens of meters. On the one hand, it is necessary to reduce wear by improving the working conditions, and on the other hand, it is necessary to improve the hardness and wear resistance of the surface of the chute chain.
Steel mills usually use manganese steel liners or waste ball mill liners as anti-wear liners. The main materials are cast iron, stainless steel and polyethylene molecular materials. However, in actual use, the metal liner is severely worn and replaced frequently, and some even need to replace the chute liner in less than a week, which seriously affects labor efficiency and safe and civilized production. However, polymer materials are expensive, not resistant to impact, and the transportation and use costs are very high.
The wear-resistant ceramic lining plate of the chute is currently the chute lining material with good effect and the widest application range. It is made of alumina, which is formed at a high temperature of 1700 ° C. The hardness reaches HRA88, second only to diamond. , with strong impact resistance, is the common choice of performance and price.